3. The working substance for a Carnot cycle is 8 Ibm of air. The volume at the beginning of isothermal expansion is 9 ft and the pressure is 300 psia. The ratio of expansion during the addition of heat is 2 and the temperature of the cold body is 90 °F. Find: a) Q, and QR (BTU), b) V3 and P3, c) V, and P4, d) mean effective pressure (psia). 4. In an air standard dual cycle, P, = 101.325 kPaa and t, = 60.3 °C. Compression ratio is 18 and the pressure at the end of the constant volume heat addition process is 7695 kPaa. Cut-off ratio is 1.5. On the basis of 1 kg of a hot air standard with k = 1.31, find: a) P,V,T at cycle state points, b) percent clearance, c) Wnet (KJ), d) thermal efficiency, e) mean effective pressure (kPaa)

3. The working substance for a Carnot cycle is 8 Ibm of air. The volume at the beginning of isothermal expansion is 9 ft and the pressure is 300 psia. The ratio of expansion during the addition of heat is 2 and the temperature of the cold body is 90 °F. Find: a) Q, and QR (BTU), b) V3 and P3, c) V, and P4, d) mean effective pressure (psia). 4. In an air standard dual cycle, P, = 101.325 kPaa and t, = 60.3 °C. Compression ratio is 18 and the pressure at the end of the constant volume heat addition process is 7695 kPaa. Cut-off ratio is 1.5. On the basis of 1 kg of a hot air standard with k = 1.31, find: a) P,V,T at cycle state points, b) percent clearance, c) Wnet (KJ), d) thermal efficiency, e) mean effective pressure (kPaa)

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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3. The working substance for a Carnot cycle is 8 Ibm of air. The volume at the beginning of isothermal
expansion is 9 ft° and the pressure is 300 psia. The ratio of expansion during the addition of heat is 2
and the temperature of the cold body is 90 °F. Find: a) Q, and QR (BTU), b) V3 and P3, c) V, and P4, d)
mean effective pressure (psia).
4. In an air standard dual cycle, P, = 101.325 kPaa and t, = 60.3 °C. Compression ratio is 18 and the
pressure at the end of the constant volume heat addition process is 7695 kPaa. Cut-off ratio is 1.5. On
the basis of 1 kg of a hot air standard with k = 1.31, find: a) P,V,T at cycle state points, b) percent
clearance, c) Wnet (KJ), d) thermal efficiency, e) mean effective pressure (kPaa)

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